From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boaz Harrosh Subject: Re: ramdisk problems in 4.0-rc1? (was Re: [PATCH 1/4] xfs/104: log size too small for 4k sector drives) Date: Mon, 02 Mar 2015 11:40:35 +0200 Message-ID: <54F43013.10305@plexistor.com> References: <1424818479-10083-1-git-send-email-david@fromorbit.com> <1424818479-10083-2-git-send-email-david@fromorbit.com> <20150225161151.GC28053@bfoster.bfoster> <20150225223248.GH4251@dastard> <20150225233115.GA1009@bfoster.bfoster> <20150225234343.GI4251@dastard> <54EECF53.8010207@plexistor.com> <20150227005837.GG18360@dastard> <54F2CD85.3060303@plexistor.com> <20150302010924.GQ4251@dastard> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: Brian Foster , fstests@vger.kernel.org, linux-fsdevel@vger.kernel.org, axboe@fb.com To: Dave Chinner , Boaz Harrosh Return-path: Received: from mail-wg0-f45.google.com ([74.125.82.45]:46951 "EHLO mail-wg0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751098AbbCBJki (ORCPT ); Mon, 2 Mar 2015 04:40:38 -0500 Received: by wggy19 with SMTP id y19so32100629wgg.13 for ; Mon, 02 Mar 2015 01:40:37 -0800 (PST) In-Reply-To: <20150302010924.GQ4251@dastard> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On 03/02/2015 03:09 AM, Dave Chinner wrote: > On Sun, Mar 01, 2015 at 10:27:49AM +0200, Boaz Harrosh wrote: >> On 02/27/2015 02:58 AM, Dave Chinner wrote: <> >> No the "if DAX" is for the 4k thing. The enablement of the uevents is >> with a new "part_show" module parameter (See patch-1). > > Sure, but that doesn't answer my question: what is generating device > level uevents when all I'm doing is mkfs/mount/umount on the device? > I was suspecting it is this systemd bug which keeps trying to tier-down the devices. >>> I'm not sure how to go about finding that >>> trigger right now and as such I won't really have time to look at it >>> until after lsfmm/vault... >>> >> >> I'll try to reproduce this here. What Fedora version do I need? > > I'm running debian unstable w/ systemd-215 on the particular test > machine that is hitting this problem. > Oooff, On my fedora 20 I'm at systemd 208. I'll see if I have time to install an fc21 vm or maybe upgrade from source. (Any easy way?) I have setup my xfs rig and ran "./check -g auto" by now. I tried both part_show=1/0 and both look working as expected. (Do I need any special $MKFS_OPTIONS or anything else) I'll probably be giving up soon, and will just wait for more reports. With the patch-1 I sent I am reverting to old behavior so I need a reproducer to try and run with patch-1 and part_show=1 should show the problem and part_show=0 should not. Else this is something else > Cheers, > Dave. > Thanks Dave, sorry for trapping you in this boring mess, life at Kernel the one reproducing the problem needs to help fix it ;-) Have an enjoyable and productive LSF Thanks Boaz